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= 1/30 - 1/20
= 2-3/60
= -1/60
= 60/-1 = -60 cm = 60 cm
Sifat : Maya, Tegak, diperbesar
dit. s'=?
penyelesaian
JARAK BAYANGAN
1/f=1/s+1/s'
1/30=1/20+1/s'
1/s'=1/30-1/20 (samakan penyebutnya)
1/s'= 2/60-3/60
1/s'=-1/60
s'=-60cm (maya)
SIFATNYA : Nyata,terbalik, diperkecil
maaf ya kalau salah